EP3807943B1 - Motor vehicle with coupling element - Google Patents

Motor vehicle with coupling element Download PDF

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Publication number
EP3807943B1
EP3807943B1 EP19801737.8A EP19801737A EP3807943B1 EP 3807943 B1 EP3807943 B1 EP 3807943B1 EP 19801737 A EP19801737 A EP 19801737A EP 3807943 B1 EP3807943 B1 EP 3807943B1
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EP
European Patent Office
Prior art keywords
battery housing
coupling element
geometry
side member
body side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19801737.8A
Other languages
German (de)
French (fr)
Other versions
EP3807943A1 (en
Inventor
Tobias Urban
Thomas Milde
Hans-Dieter Wilde
Jochen Röcker
Daniel WEIGERT
Carlo GOLD
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Audi AG
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Audi AG
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Publication date
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Publication of EP3807943A1 publication Critical patent/EP3807943A1/en
Application granted granted Critical
Publication of EP3807943B1 publication Critical patent/EP3807943B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a motor vehicle comprising a body with two body side members and at least one battery arranged between the body side members with a battery housing comprising two battery housing side members.
  • Partially or fully electric vehicles have one or more batteries, which are usually installed on the body side below the body floor. It is usually located between two body side members, towards which it is supported.
  • the battery housing with its two battery housing longitudinal beams is coupled or connected to the body longitudinal beams. This support protects the battery or the energy storage in the event of a side impact accident, as any forces are initially absorbed by the side skirts and are otherwise absorbed and transmitted via the battery housing.
  • the DE 10 2010 033123 A1 shows, for example, a component connecting the battery housing with a longitudinal beam.
  • the battery housing side members In order to achieve the best possible connection or support, the battery housing side members must be placed on the body side members over as large an area as possible. Due to the specific geometry of the body side members, which are designed accordingly with regard to the crash kinematics, correspondingly specific body side member shapes arise in the connection area, which means that the battery housing side members also have to be designed correspondingly geometrically in order to at least partially accommodate or reproduce this shape. Since the geometry of the body side members is type-specific and of Vehicle type can change from vehicle type to vehicle type, this means that specific battery housings have to be provided for each vehicle type, the battery housing longitudinal supports of which are designed accordingly geometrically in order to achieve optimal support or connection.
  • the invention is based on the problem of specifying a motor vehicle that is improved in comparison.
  • At least one coupling element that couples the two longitudinal members is arranged between the battery housing longitudinal members and the body longitudinal members.
  • the battery housing is no longer directly connected to the body side members, but rather a coupling element is arranged between the respective body side member and the battery housing side member, which connects both.
  • This coupling element necessarily has a shape on the side facing the body side member that corresponds to the geometry of the body side member in order to ensure optimal connection or support to the body side member.
  • the coupling element can have a simple, quasi-standardized shape or geometry that is the same for several vehicle types, which makes it possible to design the battery housing or the battery housing longitudinal supports in a correspondingly simple manner in terms of the carrier geometry and, in particular, the same for battery housings for several vehicle types Use the battery housing or battery housing longitudinal support.
  • the coupling element ultimately defines the interface geometry of the battery housing, but not the body side members.
  • the coupling element forms the interface on the one hand to the body side member and on the other hand to the battery housing side member, the coupling element can also be used to assemble a battery housing whose side member geometry does not originally match the body side member geometry, but this is made possible by the corresponding design of the coupling element shape. This is because one side of the coupling element is shaped according to the body side member geometry, the other side according to the battery housing side member geometry, so that the geometries that were originally not coupled can still be connected.
  • the coupling system according to the invention therefore offers both the possibility of installing battery housings with geometrically identical battery housing longitudinal beams in bodies with different geometrically different body longitudinal beams across all types of geometry, as well as the possibility of installing battery housings with battery housing longitudinal beams that differ in geometry to be mounted in bodies with geometrically identical or varying body side members and to create optimal support or connection conditions.
  • the coupling element itself is preferably elongated, i.e. it is carrier-like and runs parallel to the two longitudinal carriers. It should be at least as long as the respective battery housing longitudinal support, so that the battery housing rests completely on the respective coupling element or is supported on it over its entire length.
  • the coupling element(s) of the respective battery housing longitudinal members, as well as the respective body longitudinal members interlock with each other in a form-fitting manner, so that the largest possible contact or support surface results.
  • the coupling element or elements and/or the respective battery housing longitudinal support have a substantially L-shaped cross section, so that support or contact is provided on at least two surfaces that are at an angle to one another.
  • the or each coupling element has an inclined sliding surface which lies adjacent to an inclined sliding surface formed on the battery housing longitudinal support.
  • the coupling element or elements are usually attached to the body side member. If the body side member is deformed in the event of a side impact, the side member is moved inwards towards the center of the vehicle, and thus also the coupling element or elements.
  • corresponding inclined sliding surfaces are provided on the coupling element(s), and the respective associated battery housing longitudinal supports also have corresponding sliding surfaces on. As part of the deformation of the body side member, the inclined sliding surfaces of the coupling element(s) now run onto the inclined sliding surfaces of the battery housing longitudinal member.
  • the battery housing side members are not firmly connected to the respective coupling element, but are attached to the underbody of the body via appropriate connections. Due to the accretion of the sliding inclined surface of the coupling element(s) and a continued movement of the coupling elements due to the deformation of the body side member, the battery housing side member and thus the battery housing experience a force component directed vertically downwards and are therefore pushed away downwards. This means that a targeted relative movement of the battery housing relative to the body in the event of a crash is achieved via this sliding inclined surface combination, so that a further protective function can be created in the area of this interface.
  • the or each coupling element can be made of metal, in particular aluminum.
  • a coupling element made of a plastic, in particular a fiber-reinforced plastic or a composite material, can also be used.
  • Fig. 1 shows a partial view of a motor vehicle 1 according to the invention, only one body side member 2 of the motor vehicle 1 being shown. Adjacent to this is a battery 3 with a battery housing 4 comprising a battery housing longitudinal support 5 shown here.
  • the motor vehicle has two side body side members running parallel, just as the battery housing 4 also has two opposite battery housing side members 5.
  • a coupling element 6 is provided, which can be a metal component, in particular made of aluminum, or a plastic component, in particular made of a fiber-reinforced plastic, or a composite component.
  • This coupling element 6 serves to connect the respective battery housing longitudinal member 5 to the body longitudinal member 2 or to support it thereon. In the assembly position it is attached to the body side member 2, the battery housing side member lies against it and is either connected to it via simple fastening elements or is not attached to it itself.
  • the body side member 2 has a receiving geometry 7, which in the example shown is, for example, a right-angled, longitudinal recording.
  • the coupling element 6 has a side geometry 8 that points towards the body side member 2 and is shape-compatible according to the invention, so it is also designed at right angles in this area. This results in a positive engagement with the body side member 2, which enables the coupling element 6 to be easily attached to the body side member 2 and also enables good force absorption.
  • the coupling element 6 has an overall L-shape, which results in a corresponding one on the other side second side geometry 9 is formed, which in turn is shape-compatible with the side geometry 10 of the battery housing longitudinal support 5, which is also L-shaped. So there are basically two folding geometries opposite each other, like... Fig. 1 clearly shows that they intertwine.
  • the coupling element 6 has two different side geometries 8, 9, which are each based on the corresponding connection geometry 7 or 10 of the body side member 2 or the side sill and the battery housing side member 5, so that the in Fig. 1 shown battery housing side member 5, the side geometry 10 of which does not match the receiving geometry 7 of the body side member 2, despite everything being connected to it or supported.
  • Fig. 2 shows a second exemplary embodiment of a motor vehicle 1 according to the invention in a partial view with the body side member 2, the battery 3 with the battery housing side member 5 and the coupling element 6.
  • the coupling element 6 and the body side member 2 in turn have shape-compatible, rectangular receiving geometries or side geometries 7, 8, similar to in Fig. 1 , however, here the coupling element 6 is dimensioned somewhat larger than in the exemplary embodiment Fig. 1 .
  • the battery housing longitudinal support 5 also has a different geometry, and here too it basically has an L-shape.
  • the side geometry 9 of the coupling element 6 and the side geometry 10 of the battery housing longitudinal support 5 differ slightly compared to the exemplary embodiment Fig. 1 . Regardless of this, however, there is also a positive engagement on the part of the coupling element 6 with both the body side member 2 and the battery housing side member 5.
  • Fig. 2 shows that a battery housing 4 or a battery housing side member 5 that does not actually fit in terms of geometry can be connected to a body side member 2 of a different geometry.
  • Fig. 3 shows an exemplary embodiment of a partial view of a motor vehicle 1 with a body side member 2 and a battery 3, in which an inclined sliding surface 11 is provided on the coupling element 6.
  • the battery housing longitudinal support 5 has an inclined sliding surface 12, which is arranged adjacent to the inclined sliding surface 11 in the assembly position.
  • the battery housing longitudinal support 5 is also L-shaped here and therefore also has a corresponding side geometry 10, which corresponds to the side geometry 9 of the coupling element 6.
  • the receiving geometry 7 of the body side member 2 and the side geometry 8 of the coupling element 6 are as already with respect to Figures 1 and 2 described.
  • the two inclined sliding surfaces 11, 12 enable sliding on one another in the event of a crash, which will be discussed below in conjunction with Fig. 5 is still being received.
  • Fig. 4 finally shows a fourth embodiment of a partial view of a motor vehicle according to the invention with body side member 2, battery 3 with battery housing side member 5 and coupling element 6, whereby the receiving geometry 7 of the body side member 2 differs significantly from the previously described embodiments. Although it is again exemplarily rectangular, it is significantly wider compared to the exemplary embodiments described above.
  • the battery housing longitudinal support 5 has the same geometry as in the exemplary embodiment Fig. 3 has, the coupling element 6 inevitably has a significantly different geometry.
  • it is essentially L-shaped, but significantly wider and also higher with the connection area to the body side member 2.
  • It has a corresponding, essentially rectangular side geometry 8, which serves to connect to the body side member 2.
  • the side geometry 9 shows the L-shape, so that here too there is a positive engagement between the battery housing longitudinal support 5 and the coupling element 6.
  • the coupling element has a first inclined sliding surface 11 and the battery housing longitudinal support 5 has a second inclined sliding surface 12, which can slide off one another in the event of a crash.
  • the exemplary embodiments according to Figures 3 and 4 show how by varying the geometry of the coupling element 6, an identical battery housing longitudinal member 5 can be connected to different body longitudinal members 2.
  • Fig. 5 finally shows a schematic representation in the form of two views to explain the sliding process in the event of a crash.
  • the motor vehicle 1 is in accordance with the design Fig. 3 shown.
  • the two inclined sliding surfaces 11, 12 rest against one another or are slightly spaced apart from one another. If there is now a side impact, as shown by the arrow P, and a correspondingly violent deformation of the body side member 2, as in Fig. 5 shown, the coupling element 6 is shifted slightly to the right, so that its inclined sliding surface 11 runs on the sliding inclined surface 12 of the battery housing longitudinal support 5. This experiences a force component that is directed vertically downwards, as shown by arrow P2.
  • the resulting kinematics has a positive effect on the resulting energy storage module intrusions within the battery 3, which are better protected by sliding downwards, so that inside the housing if necessary fewer protective or stiffening elements have to be provided, which has a weight-reducing effect.
  • the coupling elements 6 shown are preferably as long as the battery housing longitudinal supports 5, so the coupling elements are also corresponding elongated, one-piece supports.
  • the coupling element or elements are preferably made of metal, in particular aluminum, but they can also be made of a plastic or a fiber-reinforced plastic, or of a composite material, which enables weight savings.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Description

Die Erfindung betrifft ein Kraftfahrzeug umfassend eine Karosserie mit zwei Karosserielängsträgern sowie wenigstens eine zwischen den Karosserielängsträgern angeordneten Batterie mit einem Batteriegehäuse umfassend zwei Batteriegehäuselängsträger.The invention relates to a motor vehicle comprising a body with two body side members and at least one battery arranged between the body side members with a battery housing comprising two battery housing side members.

Teil- oder vollelektrisch fahrende Fahrzeuge weisen eine oder mehrere Batterien auf, die üblicherweise karosserieseitig unterhalb des Karosseriebodens verbaut sind. Sie befindet sich üblicherweise zwischen zwei Karosserielängsträgern, zu denen hin sie abgestützt ist. Hierzu ist das Batteriegehäuse mit seinen beiden Batteriegehäuselängsträgern mit den Karosserielängsträgern gekoppelt respektive verbunden. Über diese Abstützung wird die Batterie respektive werden die Energiespeicher bei einem Unfall mit Seitenaufprall geschützt, da etwaige Kräfte zunächst von dem Seitenschweller aufgefangen werden und ansonsten über das Batteriegehäuse aufgenommen und weitergeleitet werden. Die DE 10 2010 033123 A1 zeigt z.B. ein das Batteriegehäuse mit einem Längsträger verbindendes Bauteil.Partially or fully electric vehicles have one or more batteries, which are usually installed on the body side below the body floor. It is usually located between two body side members, towards which it is supported. For this purpose, the battery housing with its two battery housing longitudinal beams is coupled or connected to the body longitudinal beams. This support protects the battery or the energy storage in the event of a side impact accident, as any forces are initially absorbed by the side skirts and are otherwise absorbed and transmitted via the battery housing. The DE 10 2010 033123 A1 shows, for example, a component connecting the battery housing with a longitudinal beam.

Um eine möglichst gute Anbindung respektive Abstützung zu erzielen, ist eine möglichst großflächige Anlage der Batteriegehäuselängsträger an den Karosserielängsträgern erforderlich. Aufgrund der spezifischen Geometrie der Karosserielängsträger, die im Hinblick auf die Crashkinematik entsprechend ausgelegt sind, ergeben sich im Anbindungsbereich entsprechend spezifische Karosserielängsträgerformen, was dazu führt, dass auch die Batteriegehäuselängsträger entsprechend geometrisch auszulegen sind, um diese Form zumindest teilweise aufzunehmen beziehungsweise abzubilden. Da die Geometrie der Karosserielängsträger typenspezifisch ist und von Fahrzeugtyp zu Fahrzeugtyp sich ändern kann, führt dies dazu, dass quasi für jeden Fahrzeugtyp spezifische Batteriegehäuse vorzuhalten sind, deren Batteriegehäuselängsträger entsprechend geometrisch ausgebildet sind, um eine optimale Abstützung respektive Anbindung zu erreichen.In order to achieve the best possible connection or support, the battery housing side members must be placed on the body side members over as large an area as possible. Due to the specific geometry of the body side members, which are designed accordingly with regard to the crash kinematics, correspondingly specific body side member shapes arise in the connection area, which means that the battery housing side members also have to be designed correspondingly geometrically in order to at least partially accommodate or reproduce this shape. Since the geometry of the body side members is type-specific and of Vehicle type can change from vehicle type to vehicle type, this means that specific battery housings have to be provided for each vehicle type, the battery housing longitudinal supports of which are designed accordingly geometrically in order to achieve optimal support or connection.

Der Erfindung liegt das Problem zugrunde, ein demgegenüber verbessertes Kraftfahrzeug anzugeben.The invention is based on the problem of specifying a motor vehicle that is improved in comparison.

Zur Lösung dieses Problems ist bei einem Kraftfahrzeug der eingangs genannten Art erfindungsgemäß vorgesehen, dass zwischen den Batteriegehäuselängsträgern und den Karosserielängsträgern jeweils wenigstens ein die beiden Längsträger koppelndes Koppelelement angeordnet ist.To solve this problem, in a motor vehicle of the type mentioned at the outset, it is provided according to the invention that at least one coupling element that couples the two longitudinal members is arranged between the battery housing longitudinal members and the body longitudinal members.

Bei dem erfindungsgemäßen Kraftfahrzeug ist das Batteriegehäuse nicht mehr unmittelbar an den Karosserielängsträgern angebunden, vielmehr ist zwischen dem jeweiligen Karosserielängsträger und dem Batteriegehäuselängsträger ein Koppelelement angeordnet, das beide verbindet. Dieses Koppelelement weist an der zum Karosserielängsträger weisenden Seite zwangsläufig eine entsprechend der Geometrie des Karosserielängsträgers ausgelegte Form aus, um eine optimale Anbindung beziehungsweise Abstützung zum Karosserielängsträger sicherzustellen. An der zum jeweiligen Batteriegehäuselängsträger weisenden Seite jedoch kann das Koppelelement eine einfache, quasi standardisierte respektive für mehrere Fahrzeugtypen gleiche Form respektive Geometrie aufweisen, was es erlaubt, auch die Batteriegehäuse respektive die Batteriegehäuselängsträger dementsprechend einfach in der Trägergeometrie auszuführen und insbesondere für Batteriegehäuse für mehrere Fahrzeugtypen gleiche Batteriegehäuse respektive Batteriegehäuselängsträger einzusetzen. Das heißt, dass erfindungsgemäß das Koppelelement letztlich die Schnittstellengeometrie des Batteriegehäuses definiert, nicht aber die Karosserielängsträger.In the motor vehicle according to the invention, the battery housing is no longer directly connected to the body side members, but rather a coupling element is arranged between the respective body side member and the battery housing side member, which connects both. This coupling element necessarily has a shape on the side facing the body side member that corresponds to the geometry of the body side member in order to ensure optimal connection or support to the body side member. However, on the side facing the respective battery housing longitudinal support, the coupling element can have a simple, quasi-standardized shape or geometry that is the same for several vehicle types, which makes it possible to design the battery housing or the battery housing longitudinal supports in a correspondingly simple manner in terms of the carrier geometry and, in particular, the same for battery housings for several vehicle types Use the battery housing or battery housing longitudinal support. This means that, according to the invention, the coupling element ultimately defines the interface geometry of the battery housing, but not the body side members.

Ebenso ist es natürlich möglich, auch unterschiedliche Batteriegehäuse respektive Batteriegehäuse mit unterschiedlich geformten Batteriegehäuselängsträgern an unterschiedlichen Karosserielängsträgergeometrien zu verbauen. Denn dadurch, dass das Koppelelement die Schnittstelle einerseits zum Karosserielängsträger, andererseits zum Batteriegehäuselängsträger bildet, kann durch das Koppelelement eine Montage auch eines Batteriegehäuses erfolgen, dessen Längsträgergeometrie ursprünglich nicht zur Karosserielängsträgergeometrie passt, was aber über die entsprechende Ausgestaltung der Koppelelementform ermöglicht wird. Denn die eine Seite des Koppelelements ist entsprechend der Karosserielängsträgergeometrie ausgeformt, die andere Seite entsprechend der Batteriegehäuselängsträgergeometrie, so dass die ursprünglich nicht koppelbaren Geometrien doch verbunden werden können. Nachdem die unterschiedlichen Geometrien der Karosserielängsträger der verschiedenen Typen innerhalb einer Fahrzeugpalette ebenso bekannt sind wie die Geometrien der Batteriegehäuselängsträger der verschiedenen Batteriegehäuse, die innerhalb der Modellpalette verbaut werden können, ist es ohne weiteres möglich, durch Vorhaltung mehrerer, unterschiedliche Geometriekombinationen seitens der beiden zu koppelnden Längsträger aufnehmenden respektive abbildenden Koppelelemente die in Verbindung unterschiedlicher Batteriegehäuse zu entsprechenden, verschiedenartigen Karosserielängsträgern zu ermöglichen. Das heißt, dass der Verbau unterschiedlicher Batteriegehäuse allein über die Varianz des zu verwendenden Koppelelements ermöglicht wird. Irgendwelche formgeberischen Eingriffe im Bereich der zu verbindenden Längsträger sind daher nicht erforderlich.It is of course also possible to install different battery housings or battery housings with differently shaped battery housing side members on different body side member geometries. Because the coupling element forms the interface on the one hand to the body side member and on the other hand to the battery housing side member, the coupling element can also be used to assemble a battery housing whose side member geometry does not originally match the body side member geometry, but this is made possible by the corresponding design of the coupling element shape. This is because one side of the coupling element is shaped according to the body side member geometry, the other side according to the battery housing side member geometry, so that the geometries that were originally not coupled can still be connected. Since the different geometries of the body side members of the different types within a vehicle range are known, as are the geometries of the battery housing side members of the different battery housings that can be installed within the model range, it is easily possible by providing several, different geometry combinations on the part of the two side members to be coupled receiving or imaging coupling elements that can be combined with different battery housings to form corresponding, different types of body side members. This means that the installation of different battery housings is made possible solely by the variance of the coupling element to be used. Any shaping interventions in the area of the longitudinal beams to be connected are therefore not necessary.

Das heißt, dass das erfindungsgemäße Koppelsystem demzufolge sowohl die Möglichkeit bietet, typenübergreifend von der Geometrie her Batteriegehäuse mit geometrisch gleichen Batteriegehäuselängsträgern in Karosserien mit von der Geometrie her unterschiedlichen Karosserielängsträgern zu verbauen, wie auch die Möglichkeit gegeben ist, Batteriegehäuse mit von der Geometrie her unterschiedlichen Batteriegehäuselängsträgern in Karosserien mit geometrisch gleicher oder ebenfalls variierenden Karosserielängsträgern zu montieren und jeweils optimale Abstützungs- respektive Anbindungsverhältnisse zu schaffen.This means that the coupling system according to the invention therefore offers both the possibility of installing battery housings with geometrically identical battery housing longitudinal beams in bodies with different geometrically different body longitudinal beams across all types of geometry, as well as the possibility of installing battery housings with battery housing longitudinal beams that differ in geometry to be mounted in bodies with geometrically identical or varying body side members and to create optimal support or connection conditions.

Das Koppelelement selbst ist gemäß einer ersten Erfindungsalternative bevorzugt länglich ausgeführt, es ist also trägerartig und verläuft parallel zu den beiden Längsträgern. Es sollte zumindest so lang wie der jeweilige Batteriegehäuselängsträger sein, so dass das Batteriegehäuse über seine gesamte Länge komplett am jeweiligen Koppelelement anliegt respektive daran abgestützt ist.According to a first alternative to the invention, the coupling element itself is preferably elongated, i.e. it is carrier-like and runs parallel to the two longitudinal carriers. It should be at least as long as the respective battery housing longitudinal support, so that the battery housing rests completely on the respective coupling element or is supported on it over its entire length.

Alternativ dazu besteht die Möglichkeit, relativ kurze Koppelelemente zu verwenden, so dass im Bereich zwischen den beiden zu koppelnden Längsträgern jeweils mehrere Koppelelemente vorgesehen sind, z. B. zwei, drei oder vier Koppelelemente, die über die Länge des Batteriegehäuses verteilt sind. Es ist also eine Anbindung an mehreren Stellen vorgesehen. Dies spart insbesondere Gewicht, da die mehreren, kürzeren Koppelelemente etwas leichter sind als ein einteiliges langes trägerartiges Koppelelement.Alternatively, it is possible to use relatively short coupling elements, so that several coupling elements are provided in the area between the two longitudinal beams to be coupled, e.g. B. two, three or four coupling elements that are distributed over the length of the battery housing. A connection is therefore planned at several points. This saves weight in particular, since the several, shorter coupling elements are somewhat lighter than a one-piece, long, carrier-like coupling element.

Das oder die Koppelelemente der jeweiligen Batteriegehäuselängsträger, wie natürlich auch der jeweilige Karosserielängsträger, greifen erfindungsgemäß formschlüssig ineinander, so dass sich eine möglichst große Anlagebeziehungsweise Abstützfläche ergibt. Bevorzugt weist das oder weisen die Koppelelemente und/oder der jeweilige Batteriegehäuselängsträger einen im Wesentlichen L-förmigen Querschnitt auf, so dass eine Abstützung respektive Anlage an wenigstens zwei unter einem Winkel zueinanderstehenden Flächen gegeben ist.According to the invention, the coupling element(s) of the respective battery housing longitudinal members, as well as the respective body longitudinal members, interlock with each other in a form-fitting manner, so that the largest possible contact or support surface results. Preferably, the coupling element or elements and/or the respective battery housing longitudinal support have a substantially L-shaped cross section, so that support or contact is provided on at least two surfaces that are at an angle to one another.

Eine besonders zweckmäßige Weiterbildung der Erfindung sieht vor, dass das oder jedes Koppelelement eine Gleitschrägfläche aufweist, die benachbart zu einer am Batteriegehäuselängsträger ausgebildeten Gleitschrägfläche liegt. Das oder die Koppelelemente sind üblicherweise am Karosserielängsträger befestigt. Kommt es bei einem Seitenaufprall zu einer Deformation des Karosserielängsträgers, so wird der Längsträger nach innen in Richtung Fahrzeugmitte bewegt, mithin auch das oder die Koppelelemente. Gemäß dieser Erfindungsausgestaltung sind an dem oder den Koppelelementen entsprechende Gleitschrägflächen vorgesehen, die jeweiligen zugeordneten Batteriegehäuselängsträger weisen ebenfalls entsprechende Gleitflächen auf. Im Rahmen der Deformation des Karosserielängsträgers laufen nun die Gleitschrägflächen des oder der Koppelelemente auf die Gleitschrägflächen des Batteriegehäuselängsträgers auf. Da die Batteriegehäuselängsträger nicht fest mit dem jeweiligen Koppelelement verbunden sind, sondern über entsprechende Verbindungen am Unterboden der Karosserie befestigt. Durch das Auflaufen der Gleitschrägfläche des oder der Koppelelemente und einer fortgesetzten Bewegung der Koppelelemente aufgrund der Deformation des Karosserielängsträgers kommt es nun dazu, dass der Batteriegehäuselängsträger und damit das Batteriegehäuse eine vertikal nach unten gerichtete Kraftkomponente erfährt, mithin also nach unten weggedrückt wird. Das heißt, dass über diese Gleitschrägflächenkombination eine gezielte Relativbewegung des Batteriegehäuses relativ zur Karosserie im Crashfall erreicht wird, so dass eine weitere Schutzfunktion im Bereich dieser Schnittstelle geschaffen werden kann.A particularly expedient development of the invention provides that the or each coupling element has an inclined sliding surface which lies adjacent to an inclined sliding surface formed on the battery housing longitudinal support. The coupling element or elements are usually attached to the body side member. If the body side member is deformed in the event of a side impact, the side member is moved inwards towards the center of the vehicle, and thus also the coupling element or elements. According to this embodiment of the invention, corresponding inclined sliding surfaces are provided on the coupling element(s), and the respective associated battery housing longitudinal supports also have corresponding sliding surfaces on. As part of the deformation of the body side member, the inclined sliding surfaces of the coupling element(s) now run onto the inclined sliding surfaces of the battery housing longitudinal member. Since the battery housing side members are not firmly connected to the respective coupling element, but are attached to the underbody of the body via appropriate connections. Due to the accretion of the sliding inclined surface of the coupling element(s) and a continued movement of the coupling elements due to the deformation of the body side member, the battery housing side member and thus the battery housing experience a force component directed vertically downwards and are therefore pushed away downwards. This means that a targeted relative movement of the battery housing relative to the body in the event of a crash is achieved via this sliding inclined surface combination, so that a further protective function can be created in the area of this interface.

Das oder jedes Koppelelement kann aus Metall sein, insbesondere aus Aluminium. Alternativ kann auch ein Koppelelement aus einem Kunststoff, insbesondere einem faserverstärken Kunststoff oder einem Kompositwerkstoff verwendet werden.The or each coupling element can be made of metal, in particular aluminum. Alternatively, a coupling element made of a plastic, in particular a fiber-reinforced plastic or a composite material, can also be used.

Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus den im Folgenden beschriebenen Ausführungsbeispiel sowie anhand der Zeichnungen. Dabei zeigen.

Fig. 1
eine Prinzipdarstellung einer Teilansicht eines erfindungsgemäßen Kraftfahrzeugs unter Darstellung eines Karosserielängsträgers, eines Koppelelements und eines Batteriegehäuselängsträgers in einer ersten Ausführungsform,
Fig. 2
die Anordnung aus Fig. 1 in einer zweiten Ausführungsform,
Fig. 3
die Anordnung aus in einer dritten Ausführungsform,
Fig. 4
die Anordnung in einer vierten Ausführungsform, und
Fig. 5
die Anordnung aus Fig. 3 vor (linke Darstellung) und nach (rechte Darstellung) einem Seitenaufprall.
Further advantages and details of the invention emerge from the exemplary embodiment described below and from the drawings. Show it.
Fig. 1
a schematic representation of a partial view of a motor vehicle according to the invention, showing a body side member, a coupling element and a battery housing side member in a first embodiment,
Fig. 2
the arrangement Fig. 1 in a second embodiment,
Fig. 3
the arrangement in a third embodiment,
Fig. 4
the arrangement in a fourth embodiment, and
Fig. 5
the arrangement Fig. 3 before (left illustration) and after (right illustration) a side impact.

Fig. 1 zeigt eine Teilansicht eines erfindungsgemäßen Kraftfahrzeugs 1, wobei von dem Kraftfahrzeug 1 nur ein Karosserielängsträger 2 dargestellt ist. Benachbart zu diesem ist eine Batterie 3 mit einem Batteriegehäuse 4 umfassend einen hier gezeigten Batteriegehäuselängsträger 5 gezeigt. Selbstverständlich weist das Kraftfahrzeug zwei parallel laufende seitliche Karosserielängsträger auf, wie natürlich auch das Batteriegehäuse 4 zwei gegenüberliegende Batteriegehäuselängsträger 5 aufweist. Fig. 1 shows a partial view of a motor vehicle 1 according to the invention, only one body side member 2 of the motor vehicle 1 being shown. Adjacent to this is a battery 3 with a battery housing 4 comprising a battery housing longitudinal support 5 shown here. Of course, the motor vehicle has two side body side members running parallel, just as the battery housing 4 also has two opposite battery housing side members 5.

Zur Anbindung des Batteriegehäuses 4 an den jeweiligen Karosserielängsträger 2 ist erfindungsgemäß ein Koppelelement 6 vorgesehen, bei dem es sich um ein Metallbauteil, insbesondere aus Aluminium, oder ein Kunststoffbauteil, insbesondere aus einem faserverstärkten Kunststoff oder ein Kompositbauteil handeln kann. Dieses Koppelelement 6 dient dazu, den jeweiligen Batteriegehäuselängsträger 5 an den Karosserielängsträger 2 anzubinden respektive daran abzustützen. In der Montagestellung ist es am Karosserielängsträger 2 befestigt, der Batteriegehäuselängsträger liegt an ihm an und ist entweder über einfache Befestigungselemente mit ihm verbunden, oder ist an ihm selbst nicht befestigt.To connect the battery housing 4 to the respective body side member 2, according to the invention a coupling element 6 is provided, which can be a metal component, in particular made of aluminum, or a plastic component, in particular made of a fiber-reinforced plastic, or a composite component. This coupling element 6 serves to connect the respective battery housing longitudinal member 5 to the body longitudinal member 2 or to support it thereon. In the assembly position it is attached to the body side member 2, the battery housing side member lies against it and is either connected to it via simple fastening elements or is not attached to it itself.

Der Karosserielängsträger 2 weist eine Aufnahmegeometrie 7 auf, die im gezeigten Beispiel exemplarisch eine rechtwinklige, längslaufende Aufnahme ist. Das Koppelelement 6 weist eine zum Karosserielängsträger 2 hin weisende, erfindungsgemäß formkompatible Seitengeometrie 8 auf, ist also in diesem Bereich ebenfalls rechtwinklig ausgeführt. Es ergibt sich demzufolge zum Karosserielängsträger 2 ein formschlüssiger Eingriff, was eine einfache und auch eine gute Kraftaufnahme ermöglichende Befestigung des Koppelelements 6 am Karosserielängsträger 2 ermöglicht.The body side member 2 has a receiving geometry 7, which in the example shown is, for example, a right-angled, longitudinal recording. The coupling element 6 has a side geometry 8 that points towards the body side member 2 and is shape-compatible according to the invention, so it is also designed at right angles in this area. This results in a positive engagement with the body side member 2, which enables the coupling element 6 to be easily attached to the body side member 2 and also enables good force absorption.

Im gezeigten Ausführungsbeispiel weist das Koppelelement 6 insgesamt eine L-Form auf, was dazu führt, dass an der anderen Seite eine entsprechende zweite Seitengeometrie 9 ausgebildet ist, die wiederum formkompatibel zur Seitengeometrie 10 des Batteriegehäuselängsträgers 5 ist, auch dieser ist L-förmig ausgeführt. Es stehen sich also quasi zwei Falzgeometrien gegenüber, die, wie Fig. 1 ersichtlich zeigt, ineinander eingreifen.In the exemplary embodiment shown, the coupling element 6 has an overall L-shape, which results in a corresponding one on the other side second side geometry 9 is formed, which in turn is shape-compatible with the side geometry 10 of the battery housing longitudinal support 5, which is also L-shaped. So there are basically two folding geometries opposite each other, like... Fig. 1 clearly shows that they intertwine.

Das Koppelelement 6 weist erfindungsgemäß zwei unterschiedliche Seitengeometrien 8, 9 auf, die jeweils auf die entsprechende Anbindungsgeometrie 7 beziehungsweise 10 des Karosserielängsträgers 2 respektive des Seitenschwellers sowie des Batteriegehäuselängsträgers 5 abgestellt ist, so dass der in Fig. 1 gezeigte Batteriegehäuselängsträger 5, dessen Seitengeometrie 10 nicht zur Aufnahmegeometrie 7 des Karosserielängsträger 2 passt, trotz allem daran angebunden respektive abgestützt werden kann.According to the invention, the coupling element 6 has two different side geometries 8, 9, which are each based on the corresponding connection geometry 7 or 10 of the body side member 2 or the side sill and the battery housing side member 5, so that the in Fig. 1 shown battery housing side member 5, the side geometry 10 of which does not match the receiving geometry 7 of the body side member 2, despite everything being connected to it or supported.

Fig. 2 zeigt ein zweites Ausführungsbeispiel eines erfindungsgemäßen Kraftfahrzeugs 1 in einer Teilansicht mit dem Karosserielängsträger 2, der Batterie 3 mit dem Batteriegehäuselängsträger 5 und dem Koppelelement 6. Ersichtlich weist hier das Koppelelement 6 und der Karosserielängsträger 2 wiederum formkompatible, rechtwinklige Aufnahmegeometrien respektive Seitengeometrien 7, 8 auf, ähnlich wie in Fig. 1, jedoch ist hier das Koppelelement 6 etwas größer dimensioniert als beim Ausführungsbeispiel gemäß Fig. 1. Fig. 2 shows a second exemplary embodiment of a motor vehicle 1 according to the invention in a partial view with the body side member 2, the battery 3 with the battery housing side member 5 and the coupling element 6. It can be seen here that the coupling element 6 and the body side member 2 in turn have shape-compatible, rectangular receiving geometries or side geometries 7, 8, similar to in Fig. 1 , however, here the coupling element 6 is dimensioned somewhat larger than in the exemplary embodiment Fig. 1 .

Eine andere Geometrie weist auch der Batteriegehäuselängsträger 5 auf, wobei er auch hier grundsätzlich eine L-Form aufweist. Jedoch unterscheiden sich auch hier die Seitengeometrie 9 des Koppelelements 6 und die Seitengeometrie 10 des Batteriegehäuselängsträgers 5 etwas, verglichen mit dem Ausführungsbeispiel gemäß Fig. 1. Unabhängig davon ergibt sich auch hier jedoch sowohl zum Karosserielängsträger 2 als auch zum Batteriegehäuselängsträger 5 ein formschlüssiger Eingriff seitens des Koppelelements 6. Wiederum kann, wie Fig. 2 zeigt, ein von der Geometrie her eigentlich nicht passendes Batteriegehäuse 4 respektive ein Batteriegehäuselängsträger 5 an einen Karosserielängsträger 2 anderer Geometrie angebunden werden.The battery housing longitudinal support 5 also has a different geometry, and here too it basically has an L-shape. However, here too the side geometry 9 of the coupling element 6 and the side geometry 10 of the battery housing longitudinal support 5 differ slightly compared to the exemplary embodiment Fig. 1 . Regardless of this, however, there is also a positive engagement on the part of the coupling element 6 with both the body side member 2 and the battery housing side member 5. Again, how Fig. 2 shows that a battery housing 4 or a battery housing side member 5 that does not actually fit in terms of geometry can be connected to a body side member 2 of a different geometry.

Fig. 3 zeigt ein Ausführungsbeispiel einer Teilansicht eines Kraftfahrzeugs 1 mit einem Karosserielängsträger 2 und einer Batterie 3, bei der am Koppelelement 6 eine Gleitschrägfläche 11 vorgesehen ist. Ebenso weist der Batteriegehäuselängsträger 5 eine Gleitschrägfläche 12 auf, die in der Montagestellung benachbart zur Gleitschrägfläche 11 angeordnet ist. Der Batteriegehäuselängsträger 5 ist auch hier L-förmig ausgeführt und weist demzufolge auch hier eine entsprechende Seitengeometrie 10 auf, die der Seitengeometrie 9 des Koppelelements 6 entspricht. Die Aufnahmegeometrie 7 des Karosserielängsträgers 2 und die Seitengeometrie 8 des Koppelelements 6 sind wie bereits bezüglich der Figuren 1 und 2 beschrieben. Fig. 3 shows an exemplary embodiment of a partial view of a motor vehicle 1 with a body side member 2 and a battery 3, in which an inclined sliding surface 11 is provided on the coupling element 6. Likewise, the battery housing longitudinal support 5 has an inclined sliding surface 12, which is arranged adjacent to the inclined sliding surface 11 in the assembly position. The battery housing longitudinal support 5 is also L-shaped here and therefore also has a corresponding side geometry 10, which corresponds to the side geometry 9 of the coupling element 6. The receiving geometry 7 of the body side member 2 and the side geometry 8 of the coupling element 6 are as already with respect to Figures 1 and 2 described.

Die beiden Gleitschrägflächen 11, 12 ermöglichen im Crashfall ein Abgleiten aufeinander, worauf nachfolgend in Verbindung mit Fig. 5 noch eingegangen wird.The two inclined sliding surfaces 11, 12 enable sliding on one another in the event of a crash, which will be discussed below in conjunction with Fig. 5 is still being received.

Fig. 4 zeigt schließlich eine vierte Ausführungsform einer Teilansicht eines erfindungsgemäßen Kraftfahrzeugs mit Karosserielängsträger 2, Batterie 3 mit Batteriegehäuselängsträger 5 und Koppelelement 6, wobei sich hier die Aufnahmegeometrie 7 des Karosserielängsträgers 2 deutlich von dem bisher beschriebenen Ausführungsformen unterscheidet. Sie ist zwar wiederum exemplarisch rechtwinklig, jedoch deutlich breiter verglichen mit den vorstehend beschriebenen Ausführungsbeispielen. Fig. 4 finally shows a fourth embodiment of a partial view of a motor vehicle according to the invention with body side member 2, battery 3 with battery housing side member 5 and coupling element 6, whereby the receiving geometry 7 of the body side member 2 differs significantly from the previously described embodiments. Although it is again exemplarily rectangular, it is significantly wider compared to the exemplary embodiments described above.

Da bei diesem Ausführungsbeispiel der Batteriegehäuselängsträger 5 die gleiche Geometrie wie im Ausführungsbeispiel gemäß Fig. 3 hat, weist zwangsläufig das Koppelelement 6 eine deutlich andere Geometrie auf. Es ist auch hier im Wesentlichen L-förmig, jedoch deutlich breiter und mit dem Anbindungsbereich zum Karosserielängsträger 2 auch höher ausgeführt. Es weist eine entsprechende, im Wesentlichen rechtwinklige Seitengeometrie 8 auf, die zur Anbindung zum Karosserielängsträger 2 dient. Die Seitengeometrie 9 zeigt die L-Form, so dass auch hier wiederum ein formschlüssiger Eingriff zwischen Batteriegehäuselängsträger 5 und Koppelelement 6 gegeben ist.Since in this exemplary embodiment the battery housing longitudinal support 5 has the same geometry as in the exemplary embodiment Fig. 3 has, the coupling element 6 inevitably has a significantly different geometry. Here too it is essentially L-shaped, but significantly wider and also higher with the connection area to the body side member 2. It has a corresponding, essentially rectangular side geometry 8, which serves to connect to the body side member 2. The side geometry 9 shows the L-shape, so that here too there is a positive engagement between the battery housing longitudinal support 5 and the coupling element 6.

Wie im Ausführungsbeispiel gemäß Fig. 3 weist das Koppelelement eine erste Gleitschrägfläche 11 und der Batteriegehäuselängsträger 5 eine zweite Gleitschrägfläche 12 auf, die im Crashfall aufeinander abgleiten können.As in the exemplary embodiment according to Fig. 3 the coupling element has a first inclined sliding surface 11 and the battery housing longitudinal support 5 has a second inclined sliding surface 12, which can slide off one another in the event of a crash.

Die Ausführungsbeispiele gemäß der Figuren 3 und 4 zeigen, wie durch Variation der Geometrie des Koppelelements 6 ein gleicher Batteriegehäuselängsträger 5 an unterschiedliche Karosserielängsträger 2 angebunden werden kann.The exemplary embodiments according to Figures 3 and 4 show how by varying the geometry of the coupling element 6, an identical battery housing longitudinal member 5 can be connected to different body longitudinal members 2.

Fig. 5 zeigt schließlich eine Prinzipdarstellung in Form zweier Ansichten zur Erläuterung des Abgleitvorgangs im Crashfall. Fig. 5 finally shows a schematic representation in the form of two views to explain the sliding process in the event of a crash.

In der linken Figurhälfte ist das Kraftfahrzeug 1 entsprechend der Ausgestaltung gemäß Fig. 3 gezeigt. In der Montagestellung liegen die beiden Gleitschrägflächen 11, 12 aneinander an oder sind geringfügig voneinander beabstandet. Kommt es nun zu einem seitlichen Aufprall, wie durch den Pfeil P dargestellt ist, und zu einer entsprechend heftigen Verformung des Karosserielängsträgers 2, wie in Fig. 5 dargestellt, so wird das Koppelelement 6 etwas nach rechts verschoben, so dass dessen Gleitschrägfläche 11 auf der Gleitschrägfläche 12 des Batteriegehäuselängsträgers 5 aufläuft. Dieser erfährt hierdurch eine Kraftkomponente, die vertikal nach unten gerichtet ist, wie durch den Pfeil P2 dargestellt ist. Das heißt, dass für dieses Abgleiten eine gezielte Relativbewegung der Batterie 3 vertikal nach unten eingeleitet wird, so dass es zwischen dem deformierten Karosserielängsträger 2, also dem Schweller, und dem Batteriegehäuselängsträger 5, der ebenfalls geringfügig deformiert werden kann, zu einer Entzerrung in vertikaler Richtung kommen kann. Durch eine geeignete Steifigkeitsabstimmung der Steifigkeit des Koppelelements 6 und des Batteriegehäuselängsträgers 5 und eine entsprechende Einstellung des Winkels α, den beide Gleitschrägflächen 11, 12 aufweisen, kann die Horizontalkraftkomponente, dargestellt durch den Pfeil P2, entsprechend eingestellt beziehungsweise gesteuert werden. Die sich ergebende Kinematik wirkt sich positiv auf die resultierenden Energiespeichermodulintrusionen innerhalb der Batterie 3 aus, die durch das Weggleiten nach unten besser geschützt sind, so dass im Gehäuseinneren gegebenenfalls weniger Schutz- oder Versteifungselemente vorgehalten werden müssen, was sich gewichtsreduzierend auswirkt.In the left half of the figure, the motor vehicle 1 is in accordance with the design Fig. 3 shown. In the assembly position, the two inclined sliding surfaces 11, 12 rest against one another or are slightly spaced apart from one another. If there is now a side impact, as shown by the arrow P, and a correspondingly violent deformation of the body side member 2, as in Fig. 5 shown, the coupling element 6 is shifted slightly to the right, so that its inclined sliding surface 11 runs on the sliding inclined surface 12 of the battery housing longitudinal support 5. This experiences a force component that is directed vertically downwards, as shown by arrow P2. This means that for this sliding, a targeted relative movement of the battery 3 is initiated vertically downwards, so that there is an equalization in the vertical direction between the deformed body side member 2, i.e. the sill, and the battery housing side member 5, which can also be slightly deformed can come. Through a suitable stiffness adjustment of the stiffness of the coupling element 6 and the battery housing longitudinal support 5 and a corresponding adjustment of the angle α that both sliding inclined surfaces 11, 12 have, the horizontal force component, represented by the arrow P2, can be adjusted or controlled accordingly. The resulting kinematics has a positive effect on the resulting energy storage module intrusions within the battery 3, which are better protected by sliding downwards, so that inside the housing if necessary fewer protective or stiffening elements have to be provided, which has a weight-reducing effect.

Bei den beschriebenen Ausführungsbeispielen sind die gezeigten Koppelelemente 6 bevorzugt so lang wie die Batteriegehäuselängsträger 5, es handelt sich also bei den Koppelelementen ebenfalls um entsprechende längliche, einstückige Träger. Alternativ dazu ist es auch denkbar, mehrere kurze Koppelelemente beabstandet voneinander und hintereinander angeordnet zwischen die beiden Längsträger 2, 5 zu setzen, mithin also mehrere Abstütz- oder Anbindungspositionen zu schaffen.In the exemplary embodiments described, the coupling elements 6 shown are preferably as long as the battery housing longitudinal supports 5, so the coupling elements are also corresponding elongated, one-piece supports. Alternatively, it is also conceivable to place several short coupling elements spaced apart from one another and arranged one behind the other between the two longitudinal beams 2, 5, thus creating several support or connection positions.

Das oder die Koppelelemente sind bevorzugt aus Metall, insbesondere aus Aluminium, sie können aber auch aus einem Kunststoff oder einem faserverstärken Kunststoff gefertigt sein, oder aus einem Kompositmaterial, was eine Gewichtsersparnis ermöglicht.The coupling element or elements are preferably made of metal, in particular aluminum, but they can also be made of a plastic or a fiber-reinforced plastic, or of a composite material, which enables weight savings.

Claims (7)

  1. Motor vehicle comprising a body with two body longitudinal members (2) and least one battery (3) arranged between the body longitudinal members (2) with a battery housing (4) comprising two battery housing longitudinal members (5), wherein at least one coupling element (6) coupling the two longitudinal members (2, 5) is arranged between the battery housing longitudinal members (5) and the body longitudinal members (2), wherein the or each coupling element (6) has a first and a second side geometry (8, 9), wherein the first side geometry (8) and a receiving geometry (7) on the respective body longitudinal member (2, 5) and the second side geometry (9) and a side geometry (10) on the respective battery housing longitudinal member (5) engage positively with one another.
  2. Motor vehicle according to claim 1,
    characterised in that
    the coupling element (6) is elongated and extends parallel to the two longitudinal members (2, 5).
  3. Motor vehicle according to claim 2,
    characterised in that
    the coupling element (6) is at least as long as the respective battery housing longitudinal member (5).
  4. Motor vehicle according to claim 1,
    characterised in that
    a plurality of coupling elements (6) are provided in the region between the two longitudinal members (2, 5).
  5. Method according to any one of the preceding claims,
    characterised in that
    the coupling element or elements (6) and/or the respective battery housing longitudinal member (5) have a substantially L-shaped cross-section.
  6. Method according to any one of the preceding claims,
    characterised in that
    the or each coupling element (6) has a sliding inclined surface (11) which is adjacent to a sliding inclined surface (12) formed on the battery housing longitudinal member (5).
  7. Method according to any one of the preceding claims,
    characterised in that
    the or each coupling element (6) is made of metal, in particular aluminum, or a plastic, in particular a fiber-reinforced plastic or a composite material.
EP19801737.8A 2018-11-05 2019-10-30 Motor vehicle with coupling element Active EP3807943B1 (en)

Applications Claiming Priority (2)

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DE102018218789.4A DE102018218789A1 (en) 2018-11-05 2018-11-05 Motor vehicle
PCT/EP2019/079724 WO2020094487A1 (en) 2018-11-05 2019-10-30 Motor vehicle with coupling element

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EP3807943A1 EP3807943A1 (en) 2021-04-21
EP3807943B1 true EP3807943B1 (en) 2024-03-06

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DE102020133182A1 (en) * 2020-12-11 2022-06-15 Bayerische Motoren Werke Aktiengesellschaft Storage housing for an energy store in a motor vehicle
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DE102022110714B4 (en) 2022-05-02 2024-01-25 Audi Aktiengesellschaft Fastening arrangement
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DE102018218789A1 (en) 2020-05-07
CN112753125A (en) 2021-05-04
EP3807943A1 (en) 2021-04-21

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